KR100949994B1 - Molding method for hollow-shaped product and molding apparatus therefor - Google Patents

Abstract

The present invention comprises the steps of a) the upper, lower molds are sequentially coupled;

b) simultaneously injecting a molding material into each of the first mold and the second cavity, the upper mold and the lower mold joined by the step a);

c) separating the upper and lower molds in a state in which the second hollow molded articles respectively formed by the step b) are attached to the upper mold second cavity and the first hollow formed article is attached to the lower mold first cavity;

d) In the state that the upper mold is detached by the step c), by moving the upper mold to one side, the upper mold to match the second hollow molded article attached to the upper mold and the first hollow molded article attached to the lower mold Lowering to combine with the lower mold;

And e) injecting and molding molten resin to bond the upper and lower parts of the hollow molded article attached to the inside of the upper and lower molds joined by the step d).

Blow molded article, molding method, molding equipment

Description

Blow Molding Method and Forming Apparatus {MOLDING METHOD FOR HOLLOW-SHAPED PRODUCT AND MOLDING APPARATUS THEREFOR}

The present invention, the upper mold fixing and the guide frame (1), the upper mold fixing and the lower side of the guide frame (1), the upper mold moving hydraulic pressure 11 and the hydraulic cylinder (12) installed to be slid to one side, the upper An upper mold (2) installed at a lower portion of the mold moving hydraulic press (11) and the hydraulic cylinder (12) and slidably installed at one side together with the upper mold moving hydraulic press (11) and the hydraulic cylinder (12), and the upper mold (2) The first and second molded parts of the upper and lower molds are respectively formed by forming the first and second molded parts, each of which comprises about half of the hollow molded product, formed by a lower mold (3) positioned at the bottom of the upper and lower molds. After separating (2, 3), the upper and lower molds (2, 3) are coalesced to join the upper and lower molds (2, 3) so that the second hollow molded article is located on the upper part of the first hollow molded article, and the molding method and the molding of the blow molded article. Relates to a device.

According to the present invention, a product which can be molded includes not only a donut-shaped molded product in which the inside is hollow and hollow at the same time as a bidet sheet, but also an automobile washer liquid tank, a brake oil tank, a coolant tank, a battery case, And molded articles such as automobile air intakes and automobile lamp covers.

Conventionally, molding methods using resins include injection molding, compression molding, injection-compression molding, and the like, and the above method is applied according to the shape of a product. One of these methods is a gas-injection molding method.

This is to inject a high-pressure gas into the molten resin in the cavity to form a hollow inside the resin.

For example, Korean Patent Publication No. 10-0724803 describes a method for forming a first molded part and a second molded part by retracting a sliding die slidably installed by an actuator provided with a guide frame to mutually join a fixed die. A first primary joining step of forming a first and second cavity, a first resin injection step of supplying molten resin using nozzle units to the first and second cavities formed by the sliding die and the fixed die, and the nozzle unit A through hole forming step of forming a through hole in the joint portion of the first and second molded parts to be joined to each other using a nozzle pin; and by separating the sliding die and the fixed die, the first molded part is located on the sliding die and the second The first molding separation step of forming the molded part on the fixed die, and the second molded part and the first molded part by moving the sliding die Second matching step of joining the sliding die and the fixed die after the corresponding position, and joining step of injecting molten resin through the through hole formed in the joining part by using the nozzle unit and joining them; A method for manufacturing a hollow molded article is described, which comprises a product takeout step of removing a sliding die and a fixed die to take out a hollow molded product to which first and second molded parts are joined. The device into which the resin is injected is unclear, and the resin supply when molding the second molded part and the use of the resin nozzle supplied when joining the first molded part and the second molded part are not clearly described and thus cannot be used. There is a problem,

Korean Laid-Open Patent Publication No. 10-2007-0084229 discloses a blow molding apparatus for carrying out mold opening, mold closing, and mold tightening of a pair of mold HALVES forming a molding die. A retraction mechanism for closely separating the base supporting each pair of divided types, a first stop member provided on both sides of one base of the pair of bases, and the second base installed on both sides of the other base. 1st holding member which closely engages with the 1st locking member and the said 2nd locking member, and engages at the time of mold closing, and the 2nd locking member which engages and carries out with respect to 1st locking member, and is engaged. And a mold clamping drive mechanism for tensioning and driving the second locking member in a direction in which the pair of split molds are tightened.

In Publication No. 10-2003-0044230, a cavity 4a corresponding to a half of a hollow molded article is formed on one side, and a slide having a predetermined protrusion 20 on the other side and a molten resin is injected through the injection machine 21. A stationary base 24 having a die die 22, a back side of the slide die being slidably supported, and a molten iron 23 through which molten resin flows, and a horizontal arm of a mount 25 fixed to an upper portion of the stationary base. An actuator 27 disposed across the 26 to move the slide die 22 up and down under the control of a control unit, and corresponds to the cavity 4a facing the slide die 22. And a fixed die 15a having another cavity 4b for forming the protrusion 20a on one side and the other half of the hollow molded article on the other side, and fixed to the rear of the fixed die, and the other through the control of the controller. By actuator A blow molded article forming apparatus is described, comprising a movable support 28 reciprocating from side to side.

Publication No. 2003-0044230 discloses a slide die having a cavity corresponding to a half of a hollow molded article on one side, a predetermined protrusion on the other side, and a molten resin injected through an injection machine, and sliding the back surface of the slide die. A fixed base having a spout and a molten resin flowing therein; an actuator arranged across a horizontal arm of a mount fixed to an upper portion of the fixed base, and configured to move the slide die up and down through the control of a controller; A fixed die having a cavity facing the die and having a cavity corresponding to the cavity, and having another cavity forming a half of the other hollow molded part on the other side, and fixed to the back of the fixed die, to another actuator through control of the controller. It consists of a movable support that is reciprocated left and right by Jin technology has been disclosed.

In the injection molding method according to the prior art, the process of injection molding each of the upper and lower parts of the hollow molded article is performed as a separate process, and also the upper and lower preforms of the hollow molded article molded by separate processes in this manner. Each must be moved to a location to perform the joining process by a separate operator.

Therefore, the invention was made to solve the problem of increasing the number of two operations for the production of a single hollow molded product, and consequently the production efficiency is lowered, Korean Patent Application Publication No. 10-0735150, The name of the invention; As an improvement of the method of forming a hollow molded body and a molding apparatus,

In addition to reducing the total molding time and labor for manufacturing hollow molded articles having relatively complicated internal shapes, the production efficiency can be improved, and the cost of mold equipment and injection molding machine equipment can be reduced. It is a technical object of the present invention to provide a molding method and a molding apparatus for manufacturing a hollow molded article that can compact the entire molding apparatus for manufacturing a molded article and can efficiently use the entire work space.

The present invention, the upper mold fixing and the guide frame (1), the upper mold fixing and the lower side of the guide frame (1), the upper mold moving hydraulic pressure 11 and the hydraulic cylinder (12) installed to be slid to one side, the upper An upper mold (2) installed under the mold moving hydraulic press (11) and the hydraulic cylinder (12) and slidably mounted to one side together with the upper mold moving hydraulic press (11) and the hydraulic cylinder (12), and the upper mold (2) The first and second molded parts of the upper and lower molds are respectively formed by forming the first and second molded parts, each of which comprises about half of the hollow molded product, formed by a lower mold (3) positioned at the bottom of the upper and lower molds. After separating (2, 3), the upper and lower molds (2, 3) are assembled by joining them with each other using molten resin so that the second hollow molded article is positioned on the upper part of the first hollow molded article.

In addition, in the manufacture of primary hollow molded articles, the primary hollow molded articles are manufactured from primary resins, and then flame-retardant resins or color resins are injected through other flame-retardant and color resin injection pipes, or surface treated, or flame-retardant and color resin columns are used from the beginning. A method and apparatus for manufacturing a primary hollow molded article using only flame retardant resins or color resins through admission, and to provide a method and apparatus for molding a hollow molded article improved to manufacture hollow molded articles of various specifications and colors as a single device. It is the problem solving means of this invention.

According to the hollow molded article molding method and the molding apparatus according to the present invention, it is possible to improve the production efficiency by reducing the total molding time and the number of work for manufacturing a hollow molded article having a relatively complicated interior,

In addition, in the manufacture of primary hollow molded articles, the first hollow molded article is manufactured with primary resin, and then flame-retardant resin or color resin is injected through other flame-retardant and color resin injection pipes, or surface treated, or flame-retardant color resin injection pipes are used from the beginning. Through this method and apparatus for manufacturing primary hollow molded products with only flame retardant resin or color resin, it is possible to reduce the cost of mold equipment and injection molding machine equipment by manufacturing hollow molded products of various specifications and colors as a single device. In addition, by compactizing the entire molding apparatus for manufacturing a hollow molded article, it creates an effect that can effectively use the entire workspace.

The present invention for achieving the above object is the upper mold fixing and guide frame (1), the upper mold fixing and the lower side of the upper mold movable hydraulic pressure (11) installed to be slidable to one side of the guide frame (1) and An upper mold installed at a lower portion of the hydraulic cylinder 12, the upper mold moving hydraulic pressure 11 and the hydraulic cylinder 12, and slidably installed at one side together with the upper mold moving hydraulic pressure 11 and the hydraulic cylinder 12 ( 2) and the lower mold 3 positioned below the upper mold 2, the first and second molded parts forming about half of the hollow molded product, the upper and lower first and second molds of the upper and lower molds. After molding at each of the parts, the upper and lower molds (2, 3) are separated, and then the upper and lower molds (2, 3) are coalesced so that the second hollow molded article is positioned on the upper part of the first hollow molded article, and these are melted using mutual melt resin. Forming method of blow molded article by joining It relates to a molding apparatus.

The hollow molded article molding method according to the present invention in more detail,

a) combining the upper and lower molds sequentially;

b) simultaneously injecting a molding material into each of the first mold part and the second mold part, the upper mold and the lower mold joined by the step a);

c) separating the upper and lower molds in a state in which the second hollow molded article molded by the step b) is attached to the upper mold second molding portion, and the first hollow molded article is attached to the lower mold first molding portion;

d) In the state that the upper mold is detached by the step c), by moving the upper mold to one side, the upper mold to match the second hollow molded article attached to the upper mold and the first hollow molded article attached to the lower mold Lowering to combine with the lower mold;

And e) injecting the molten resin to bond the upper and lower parts of the hollow molded article attached to the upper and lower molds joined by the step d).

The present invention, unlike the prior art registered in Korea Patent Publication No. 10-724803, built in a hydraulic device moving to one side into the device, for manufacturing the first, second hollow molded articles in the upper and lower molds The first and second molding parts are installed, resin injection holes are formed in the first and second cavities, and two hollow molded products are molded at the same time, and then the upper mold is moved to one side. The present invention relates to a method for forming a blow molded article and a molding apparatus.

The method and apparatus for manufacturing a blow molded article according to the present invention after molding the first and second molded parts constituting about half of the hollow molded part in the upper, lower first and second molded parts, respectively,

When the upper and lower molds 2 and 3 are separated, the lower first molding part 31 and the upper second molding part 22, which have more grooves, are provided with the upper first molding part 21 having more protrusions. The first hollow molded article and the second hollow molded article manufactured in the lower first molded part 31 and the upper second molded part 22 as shown in FIGS. 3 and 4 with more grooves than the lower second molded part 32. With this remaining,

This phenomenon is a phenomenon in which a molded article inserted into a recess rather than a protrusion is not easily detached, and the upper and lower molds 2 and 3 are coalesced so that the second hollow molded article is positioned on the upper part of the first hollow molded product. The hollow molded article is manufactured by joining.

Looking at another example of the blow molding apparatus of the present invention, the same as the blow molding apparatus, but a second injection device and a flame retardant, color resin injection pipe and flame retardant, color resin connected to the second injection device in the lower mold Since the injection nozzle is additionally installed, the surface of the second hollow molded article is injected into the upper and lower second molding portions 22 and 32 connected to the first upper mold fourth resin injection pipe 26-4 as necessary. After the second hollow molded article is manufactured, flame-retardant and color resin injection pipes 38 are connected to the lower portion of the lower second molded part 32 on the surface of the second hollow molded article. 38) and flame retardant, color resin injection nozzle (39) by using a second nozzle device installed on one side of the lower mold by using a flame retardant resin or color resin is selectively flame-retardant or colored according to the characteristics of the product The second hollow molded article may be installed to be molded. Such a blow molded article can produce a product that wants a double color, and is particularly useful for manufacturing various automobile lamp covers, such as various automobile headlight covers, flashing light covers, and the like, which are red, yellow or transparent.

The upper mold (2) of the present invention is capable of linear reciprocating movement, the upper mold (2) is exactly combined with the lower mold (3).

The lower mold 3 located at the lowermost part is a base plate portion which supports the direct molding pressure by the pressing press applied to the upper mold 2, and may be fixed to the ground.

The present invention is a plurality of resin injection pipe is each installed in the hollow and the end of the hollow for supplying the molten resin and the nozzle for injecting the molten resin, each of the resin injection pipe is located in the study of opening and closing the injection port A valve on-off device including a nozzle pin is provided, and a molding nozzle and a nozzle supply device are provided at an end thereof, but this is only a technique well known in the art and thus is not described in detail in the present invention.

In addition, the combination of the upper and lower molds (2, 3) and the technical configuration of the separation is also a technique using a high pressure hydraulic pressure, which is also a technique well known in the art and has not been specifically described in the present invention.

The heating apparatus built in the apparatus of the present invention is installed to heat the resin injection pipe, and can be usually used a heating wire or steam, but the heating wire is simple, the heating temperature is depending on the type of resin used and the degree of complexity of the molded article Depending on the technology of the temperature control is only a technique well known in the art and not described in detail in the present invention.

The upper and lower first and second molding parts may be manufactured by combining the upper and lower parts to manufacture the first and second molded products, and the shape may be formed in various shapes according to product characteristics.

The present invention is characterized in that it further comprises a robot device on the outside to remove the blow molded article.

In addition, the hollow molded article (e.g., a donut-shaped molded article having a hollow inside and hollowed out at the same time as the bidet sheet) formed by the present invention is, for example, first and second divided into The two molded articles are formed into one completed molded article through the joining process from the preformed parts divided up and down.

Those skilled in the art will appreciate that various modifications and equivalent other embodiments are possible from this. Accordingly, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concept of the present invention as defined in the following claims also belong to the scope of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Example 1

1st process

After the blow molding apparatus is mounted on the injection machine (not shown),

The power is turned on to operate a heating apparatus (not shown) in the apparatus to maintain the apparatus at an appropriate temperature (depending on the type of resin), and then to fix the upper mold and the upper mold moving hydraulic unit 11 installed on the guide frame 1. And operating the hydraulic cylinder 12 so that the upper mold moving hydraulic pressure 11 and the upper mold 2 installed on the lower portion of the hydraulic cylinder 12 are positioned on the upper portion of the lower mold 3 (see FIG. 1). Fixing the upper mold and lowering the guide frame (1) and the upper mold (2) toward the lower mold (3) by using a common high pressure (not shown), the upper and lower molds (2, 3) are coalesced. The first and second molding parts 21 and 22 coincide with the lower first and second molding parts 31 and 32, and the first resin injection pipe 36 and the first mold injection resin injection pipe 26-1. After matching)

(At this time, the pin 100 of the lower mold 3 is in a retracted state)

The first resin injection pipe 36, the first mold injection resin (26-1), the second mold injection resin (26-2), and the first mold injection resin (4) After the entrance 26-4 is turned on and the prize money third resin injection pipe 26-3 and the prize money first resin injection pipe 26-5 are turned off,

When resin is injected into the apparatus through the resin inlet 5, the upper mold resin transfer pipe 28 is passed through the first mold injection pipe 26-1 through the nozzle 37 of the first resin injection pipe 36. It is injected into the upper mold-type second resin injection pipe (26-2), the upper mold-type fourth resin injection pipe (26-4) via the,

Upper and lower first molding parts 21 and 31 connected to the upper mold second resin injection pipe 26-2, and upper and lower second molding parts 22 and 31 connected to the upper mold fourth resin injection pipe 26-4. Resin was injected into 32) to prepare two first and second hollow molded articles (see Fig. 2).

2nd process

After the heating and resin injection pipe on / off device is restarted, all resin injection pipes are turned off, and then the upper mold fixing and the guide frame 1 and the upper mold 2 are raised by using a high pressure compressor (not shown), When the upper and lower molds 2 and 3 are detached, the lower first molding part 31 and the upper second molding part 22 have more recesses than the upper first molding part 21 and the lower second molding part 32. As shown in Figure 3, the manufactured first hollow molded article is present in the lower first molded part 31, the second hollow molded article remains in the upper second molded part 22,

3rd process

An upper mold (2) installed in the lower portion of the upper mold moving hydraulic pressure (11) and the hydraulic cylinder (12) by operating the upper mold moving hydraulic pressure (11) and the hydraulic cylinder (12) installed in the upper mold fixing and guide frame (1). The upper second molding part 22 of the upper part) is positioned above the lower molding part 31 of the lower mold 3 (see FIG. 4).

4th process

The upper mold fixing and the guide frame (1) and the upper mold (2) is lowered toward the lower mold (3) by using a common high pressure (not shown), the upper and lower molds (2, 3) are coalesced, the upper second When the molding part 22 and the lower first molding part 31 coincide with each other, and the first resin injection pipe 36 and the upper mold fifth resin injection pipe 26-5 coincide with each other, the lower first molding part After placing the second hollow molded article embedded in the upper second molded part 22 on the upper part of the first hollow molded article embedded in the (31),

The heating and resin injection pipe on / off device is operated to turn on the first resin injection pipe 36, the upper mold type fifth resin injection pipe 26-5, and the upper mold type third resin injection pipe 26-3,

After turning off the upper mold first resin injection pipe 26-1, the upper mold second resin injection pipe 26-2 and the upper mold fourth resin injection pipe 26-4, the resin is introduced through the resin inlet 5. When injected into, through the nozzle 37 of the first resin injection pipe 36 through the upper mold resin injection pipe (26-5) through the upper mold resin moving pipe 28, the third mold injection pipe Injected into (26-3),

After the resin is injected into the upper second molding part 22 and the lower first molding part 31 connected to the upper mold third resin injection pipe 26-3, the two first and second hollow molded articles are coalesced. (See Fig. 5)

5th process

After the heating and resin injection pipe on / off device is restarted, all resin injection pipes are turned off, and then the upper mold fixing and the guide frame 1 and the upper mold 2 are raised by using a high pressure compressor (not shown), As the upper and lower molds (2, 3) are detached and the mill pin (110) installed on the lower portion of the lower mold (3) is raised to the upper portion, the coalesced hollow molded product is pushed upwards, and as shown in FIG. After the hollow molded article in which the second hollow molded article is incorporated is raised in the state of remaining in the upper second molded part 22, it is normally removed by Robert arm or manually (see FIG. 7).

6th process

By operating the upper mold moving hydraulic pressure 11 and the hydraulic cylinder 12 installed on the upper mold fixing and guide frame 1, the upper mold 2 is moved to the original position on the upper part of the lower mold 3 (Fig. At the same time as in Fig. 7 to 1), the pin 100 of the lower mold 3 was retracted, and then returned to the first process, and the above-described operation was repeated to form a hollow molded product.

Example 2

1st process

After the blow molding apparatus is mounted on the injection machine (not shown),

The power is turned on to operate a heating apparatus (not shown) in the apparatus to maintain the apparatus at an appropriate temperature (depending on the type of resin), and then to fix the upper mold and the upper mold moving hydraulic unit 11 installed on the guide frame 1. And operating the hydraulic cylinder 12 so that the upper mold moving hydraulic pressure 11 and the upper mold 2 installed on the lower portion of the hydraulic cylinder 12 are positioned on the upper portion of the lower mold 3 (see FIG. 8). Fixing the upper mold and lowering the guide frame (1) and the upper mold (2) toward the lower mold (3) by using a common high pressure (not shown), the upper and lower molds (2, 3) are coalesced. The first and second molding parts 21 and 22 coincide with the lower first and second molding parts 31 and 32, and the first resin injection pipe 36 and the first mold injection resin injection pipe 26-1. After matching)

(At this time, the pin 100 of the lower mold 3 is in a retracted state)

The first resin injection pipe 36, the first mold injection resin (26-1), the second mold injection resin (26-2), and the first mold injection resin (4) After the entrance 26-4 is turned on and the prize money third resin injection pipe 26-3 and the prize money first resin injection pipe 26-5 are turned off,

When resin is injected into the apparatus through the resin inlet 5, the upper mold resin transfer pipe 28 is passed through the first mold injection pipe 26-1 through the nozzle 37 of the first resin injection pipe 36. It is injected into the upper mold-type second resin injection pipe (26-2), the upper mold-type fourth resin injection pipe (26-4) via the,

Upper and lower first molding parts 21 and 31 connected to the upper mold second resin injection pipe 26-2, and upper and lower second molding parts 22 and 31 connected to the upper mold fourth resin injection pipe 26-4. Resin was injected into 32 to prepare two first and second hollow molded articles,

In the second hollow molded article, resin is injected into the upper and lower second molded parts 22 and 32 connected to the first upper mold fourth resin injection pipe 26-4, and then the second hollow molded article is manufactured. The flame-retardant, color resin injection pipe 38 on the surface of the second hollow molded article uses a flame-retardant, color resin injection pipe 38 and a flame-retardant, color resin injection nozzle 39 connected to the lower portion of the lower second molding portion (32) After the flame-retardant resin or color resin is injected into the second injection device 40 to selectively manufacture the second hollow molded article according to the characteristics of the product (see Fig. 9)

2nd process

After the heating and resin injection pipe on / off device is restarted, all resin injection pipes are turned off, and then the upper mold fixing and the guide frame 1 and the upper mold 2 are raised by using a high pressure compressor (not shown), When the upper and lower molds 2 and 3 are detached, the lower first molding part 31 and the upper second molding part 22 have more recesses than the upper first molding part 21 and the lower second molding part 32. As shown in FIG. 10, the manufactured first hollow molded article exists in the lower first molded part 31, and the second hollow molded article remains in the upper second molded part 22.

3rd process

An upper mold (2) installed in the lower portion of the upper mold moving hydraulic pressure (11) and the hydraulic cylinder (12) by operating the upper mold moving hydraulic pressure (11) and the hydraulic cylinder (12) installed in the upper mold fixing and guide frame (1). The upper second molding part 22 of the upper mold part 22 is positioned above the lower molding part 31 of the lower mold part 3 (see FIG. 11).

4th process

The upper mold fixing and the guide frame (1) and the upper mold (2) is lowered toward the lower mold (3) by using a common high pressure (not shown), the upper and lower molds (2, 3) are coalesced, the upper second When the molding part 22 and the lower first molding part 31 coincide with each other, and the first resin injection pipe 36 and the upper mold fifth resin injection pipe 26-5 coincide with each other, the lower first molding part After placing the second hollow molded article embedded in the upper second molded part 22 on the upper part of the first hollow molded article embedded in the (31),

The heating and resin injection pipe on / off device is operated to turn on the first resin injection pipe 36, the upper mold type fifth resin injection pipe 26-5, and the upper mold type third resin injection pipe 26-3,

After turning off the upper mold first resin injection pipe 26-1, the upper mold second resin injection pipe 26-2 and the upper mold fourth resin injection pipe 26-4, the resin is introduced through the resin inlet 5. When injected into, through the nozzle 37 of the first resin injection pipe 36 via the upper mold resin injection pipe (26-5) through the upper mold resin moving pipe 28, the third mold injection pipe ( 26-3),

After the resin is injected into the upper second molding part 22 and the lower first molding part 31 connected to the upper mold third resin injection pipe 26-3, the two first and second hollow molded articles are coalesced. (See Fig. 12)

5th process

After the heating and resin injection pipe on / off device is restarted, all resin injection pipes are turned off, and then the upper mold fixing and the guide frame 1 and the upper mold 2 are raised by using a high pressure compressor (not shown), While the upper and lower molds 2 and 3 are detached and the pin 100 installed at the lower portion of the lower mold 3 rises to the upper portion, the coalesced hollow molded product is pushed upwards, and as shown in FIG. 13, the first hollow molded article After the hollow molded article in which the second hollow molded article is incorporated is raised in the state remaining in the upper second molded part 22, the ordinary Robert arm or manually removed (see FIG. 14).

6th process

By operating the upper mold moving hydraulic pressure 11 and the hydraulic cylinder 12 installed on the upper mold fixing and guide frame 1, the upper mold 2 is moved to the original position on the upper part of the lower mold 3 (Fig. At the same time as in Fig. 14 to Fig. 8), the pin 100 of the lower mold 3 was retracted, and then returned to the first step, and the above-described operation was repeated to form a hollow molded product.

Hereinafter, the apparatus of the present invention will be described with reference to the drawings.

As shown in Figure 1 to Figure 7, the blow molded article molding apparatus of the present invention, the upper mold fixing and the guide frame (1), the upper mold fixing and the lower portion of the guide frame (1) installed to be slidable to one side It is installed on the lower side of the mold moving hydraulic pressure (11) and the hydraulic cylinder (12), the upper mold movable hydraulic pressure (11) and the hydraulic cylinder (12) together with the upper mold movable hydraulic pressure (11) and the hydraulic cylinder (12) It is composed of an upper mold (2) installed slidably, and a lower mold (3) located below the upper mold (2),

The upper mold (2) is five upper mold heating and resin injection tube on-off device (25-1,25-2,25-3,25-4,25-5) installed at a predetermined interval spaced in the upper portion, Upper and lower mold first, second, third and fourth connected to the upper mold heating and resin injection pipe on-off device (25-1, 25-2, 25-3, 25-4, 25-5) , The fifth resin injection pipe (26-1, 26-2, 26-3, 26-4, 26-5), and the first, second, third, fourth, fifth resin injection pipe (26) -1, 26-2, 26-3, 26-4, 26-5, the upper mold transfer pipe (28) for connecting the two, and the upper two first spaced apart at a predetermined interval below the upper mold (2) , The second molding part (21, 22),

The lower mold (3) is installed vertically in the center portion, the nozzle 37 is provided at the upper end, the first resin injection pipe 36 is provided with a heating device and a valve on-off device at the rim, and the first 1, a resin inlet 5 connected to the lower portion of the resin inlet pipe 36 to inject resin, a wire 6 connected to one side of the resin inlet,

Two lower first and second molding parts 31 and 32 installed at a predetermined interval apart from each other,

One side is provided with a lower mold side moving hydraulic pressure (100) for moving the first molding portion 31 to one side, and is provided on the lower portion of the lower first molding portion 31, the spring is provided at the lower end It can be seen that the Milpin 110 is composed.

Another example of the blow molded article molding apparatus of FIGS. 8 to 14 is the same as the blow molded article molding apparatus of FIGS. 1 to 7.

However, in the lower mold, one side is connected to the lower side of the lower second molding part 32 and one side of the lower mold, and the other end is flame-retardant, color connected to the second injection device 40 installed on one side of the lower mold (3). It can be seen that the resin injection pipe 38 and the flame-retardant, color resin injection nozzle 39 are further added.

In more detail,

The lower mold (3) is installed vertically in the center portion, the nozzle 37 is provided at the upper end, the first resin injection pipe 36 is provided with a heating device and a valve on-off device at the rim, and the first 1, a resin inlet 5 and an electric wire 6 connected to the lower portion of the resin inlet pipe 36 to inject resin and air,

Two lower first and second molding parts 31 and 32 installed at a predetermined interval apart from each other,

One side is provided with a lower mold side moving hydraulic pressure (100) for moving the first molding portion 31 to one side, and is provided on the lower portion of the lower first molding portion 31, the spring is provided at the lower end And the end of the lower mold (110), the lower second molding part 32 is connected to one side of the lower mold and the other end is flame retardant, color connected to the second injection device 40 installed on one side of the lower mold (3) It can be seen that the resin injection pipe 38 and the flame-retardant, color resin injection nozzle 39 are constituted.

The operation of the mil pin 110 in the above may be operated by installing a different mil-pin driving hydraulic pressure in the spring or lower.

Figure 1 overall view of the hollow molded article manufacturing apparatus of the present invention

2 is a first process diagram of a hollow molded article manufacturing apparatus of the present invention

3 is a second process diagram of a hollow molded article manufacturing apparatus of the present invention;

4 is a third process drawing of the hollow molded article manufacturing apparatus of the present invention

5 is a fourth process diagram of the hollow molded article manufacturing apparatus of the present invention

6 is a fifth process drawing of the hollow molded article manufacturing apparatus of the present invention

7 is a sixth process diagram of the hollow molded article manufacturing apparatus of the present invention

8 to 14 another example of the hollow molded article manufacturing apparatus of the present invention

<Description of Major Symbols in Drawing>

Upper mold fixing and guide frame (1), upper mold (2), lower mold (3), resin inlet (5), electric wire (6), upper mold moving hydraulic pressure (11), hydraulic cylinder (12), upper first Molding part 21, upper second molding part 22, upper mold heating and resin injection tube on-off device (25-1, 25-2, 25-3, 25-4, 25-5), prize mold 1 Resin injection pipe (26-1), Prize mold type 2 resin injection pipe (26-2), Prize mold type 3 resin injection pipe (26-3), Prize mold type 4 resin injection pipe (26-4), Prize mold type 1 resin resin Inlet pipe 26-5, upper mold resin moving tube 28, lower first molding part 31, lower second molding part 32, first resin injection pipe 36, nozzle 37, flame retardant, color Resin injection pipe (38), flame retardant, color resin injection nozzle (39), second injection device (40), lower mold side moving hydraulic (100), mill pin (110).

Claims (12)

In blow molding apparatus, The upper mold fixing and guide frame (1), the upper mold fixing and the guide frame (1), the upper mold movable hydraulic pressure 11 and the hydraulic cylinder (12) installed to be slid to one side, and the upper mold movable hydraulic (11) and the upper mold (2) installed below the hydraulic cylinder (12) and slidably mounted to one side together with the upper mold moving hydraulic (11) and the hydraulic cylinder (12), and the lower of the upper mold (2) Consists of a lower mold (3) located in, The lower mold (3) is installed vertically in the center portion, the nozzle 37 is provided at the upper end, the first resin injection pipe 36 is provided with a heating device and a valve on-off device at the rim, and the first 1, a resin inlet 5 connected to the lower portion of the resin inlet pipe 36 to inject resin, a wire 6 connected to one side of the resin inlet, Two lower first and second molding parts 31 and 32 installed at a predetermined interval apart from each other, On one side and the lower mold side movable hydraulic pressure to move the first molding part 31 to one side, It is installed on the lower portion of the lower first molding portion 31 and the hollow molded article molding apparatus, characterized in that it comprises a mill pin 110 provided with a spring (not shown) at the lower end. Blow molding, characterized in that the addition of the flame-retardant, color resin injection pipe 38 and the flame-retardant, color resin injection nozzle (39) connected to the second injection device 40 on one side of the lower mold (3) of claim 1 Device. The upper mold (2) is five upper mold heating and resin injection tube on-off device (25-1,25-2,25-3,25-4,25) installed at a predetermined interval spaced inside the upper mold (2) -5), and the upper and lower molds 1, 2, and connected to the upper mold heating and resin injection pipe on-off device (25-1, 25-2, 25-3, 25-4, 25-5) Third, fourth, and fifth resin injection pipes (26-1, 26-2, 26-3, 26-4, 26-5), and the first prize mold first, second, third, fourth, fifth An upper mold resin transfer pipe 28 connecting the resin injection pipes 26-1, 26-2, 26-3, 26-4, and 26-5, Blow molding article forming apparatus characterized in that it comprises two upper first, second molding parts (21, 22) installed at a predetermined interval spaced below the upper mold (2). delete delete delete delete delete delete delete In the blow molding method, After the blow molding apparatus is mounted on the injection machine (not shown), The power is turned on to operate a heating apparatus (not shown) in the apparatus to maintain the apparatus at an appropriate temperature (depending on the type of resin), and then to fix the upper mold and the upper mold moving hydraulic unit 11 installed on the guide frame 1. And operating the hydraulic cylinder 12 so that the upper mold moving hydraulic pressure 11 and the upper mold 2 installed on the lower portion of the hydraulic cylinder 12 are positioned on the upper portion of the lower mold 3, and the upper mold fixing and Lower the guide frame (1) and the upper mold (2) toward the lower mold (3) by using a common high pressure pressure (not shown), the upper and lower molds (2, 3) are coalesced, the upper first, second molding After matching the parts 21 and 22 with the lower first and second molding parts 31 and 32, and matching the first resin injection pipe 36 and the first mold injection resin 26-1, , The first resin injection pipe 36, the first mold injection resin (26-1), the second mold injection resin (26-2), and the first mold injection resin (4) After the entrance 26-4 is turned on and the prize money third resin injection pipe 26-3 and the prize money first resin injection pipe 26-5 are turned off, When resin is injected into the apparatus through the resin inlet 5, the upper mold resin transfer pipe 28 is passed through the first mold injection pipe 26-1 through the nozzle 37 of the first resin injection pipe 36. Via the injection into the upper mold second resin injection pipe (26-2), the upper mold fourth resin injection pipe (26-4), Upper and lower first molding parts 21 and 31 connected to the upper mold second resin injection pipe 26-2, and upper and lower second molding parts 22 and 31 connected to the upper mold fourth resin injection pipe 26-4. 32) after the resin is injected to produce two first and second hollow molded articles, After the heating and resin injection pipe on / off device is restarted, all resin injection pipes are turned off, and then the upper mold fixing and the guide frame 1 and the upper mold 2 are raised by using a high pressure compressor (not shown), When the upper and lower molds 2 and 3 are detached, the lower first molding part 31 and the upper second molding part 22 have more recesses than the upper first molding part 21 and the lower second molding part 32. In many cases, the manufactured first hollow molded article exists in the lower first molded part 31, and the second hollow molded article remains in the upper second molded part 22. An upper mold (2) installed in the lower portion of the upper mold moving hydraulic pressure (11) and the hydraulic cylinder (12) by operating the upper mold moving hydraulic pressure (11) and the hydraulic cylinder (12) installed in the upper mold fixing and guide frame (1). The upper second forming part 22 of the upper mold lower part 31 of the lower mold 3, The upper mold fixing and the guide frame (1) and the upper mold (2) is lowered toward the lower mold (3) by using a common high pressure (not shown), the upper and lower molds (2, 3) are coalesced, the upper second When the molding part 22 and the lower first molding part 31 coincide with each other, and the first resin injection pipe 36 and the upper mold-type fifth resin injection pipe 26-5 coincide with each other, the lower first molding part After placing the second hollow molded article embedded in the upper second molded part 22 on the upper part of the first hollow molded article embedded in the (31), The heating and resin injection pipe on / off device is operated to turn on the first resin injection pipe 36, the upper mold type fifth resin injection pipe 26-5, and the upper mold type third resin injection pipe 26-3, After turning off the first mold injection resin 26-1, the second mold injection resin 26-2 and the fourth mold injection resin 26-4, the resin is inserted through the resin inlet 5. When injected into, through the nozzle 37 of the first resin injection pipe 36 via the upper mold resin injection pipe (26-5) through the upper mold resin moving pipe 28, the third mold injection pipe ( 26-3) is injected with resin, After the resin is injected into the upper second molding part 22 and the lower first molding part 31 connected to the upper mold third resin injection pipe 26-3, the two first and second hollow molded articles are coalesced. After the heating and resin injection pipe on / off device is restarted, all resin injection pipes are turned off, and then the upper mold fixing and the guide frame 1 and the upper mold 2 are raised by using a high pressure compressor (not shown), As the upper and lower molds (2, 3) are detached and the pin (110) installed on the lower portion of the lower mold (3) rises to the upper portion, the coalesced blow molded article is pushed upwards, thereby the first hollow molded article and the second hollow molded article. After the coalesced blow molded article is raised in the state remaining in the upper second molding part 22, the ordinary Robert arm or manually removed, By operating the upper mold moving hydraulic pressure 11 and the hydraulic cylinder 12 installed on the upper mold fixing and the guide frame (1), while moving the upper mold (2) to the original position on the upper part of the lower mold (3) Mill pin (110) of the lower mold (3) is then retracted, and then returning to the first process, the molding method of the hollow molded article, characterized in that to manufacture by repeating the above operation. In the blow molding method, After the blow molding apparatus is mounted on the injection machine (not shown), The power is turned on to operate a heating apparatus (not shown) in the apparatus to maintain the apparatus at an appropriate temperature (depending on the type of resin), and then to fix the upper mold and the upper mold moving hydraulic unit 11 installed on the guide frame 1. And operating the hydraulic cylinder 12 so that the upper mold moving hydraulic pressure 11 and the upper mold 2 installed on the lower portion of the hydraulic cylinder 12 are positioned on the upper portion of the lower mold 3, and the upper mold fixing and Lower the guide frame (1) and the upper mold (2) toward the lower mold (3) by using a common high pressure pressure (not shown), the upper and lower molds (2, 3) are coalesced, the upper first, second molding After matching the parts 21 and 22 with the lower first and second molding parts 31 and 32, and matching the first resin injection pipe 36 and the first mold injection resin 26-1, , The first resin injection pipe 36, the first mold injection resin (26-1), the second mold injection resin (26-2), and the first mold injection resin (4) After the entrance pipe 26-4 is turned on, the upper mold third resin injection pipe 26-3 and the upper mold first resin injection pipe 26-5 are turned off, the resin is injected into the apparatus through the resin inlet 5. In other words, through the nozzle 37 of the first resin injection pipe 36 through the upper mold resin injection pipe (26-1) through the upper mold resin moving pipe (28), the second mold injection pipe (26-) 2), injected into the upper mold fourth resin injection pipe (26-4), Upper and lower first molding parts 21 and 31 connected to the upper mold second resin injection pipe 26-2, and upper and lower second molding parts 22 and 31 connected to the upper mold fourth resin injection pipe 26-4. 32) resin is injected to produce two first and second hollow molded articles, In the second hollow molded article, resin is injected into the upper and lower second molded parts 22 and 32 connected to the first upper mold fourth resin injection pipe 26-4, and then the second hollow molded article is manufactured. The flame-retardant, color resin injection pipe 38 on the surface of the second hollow molded article uses a flame-retardant, color resin injection pipe 38 and a flame-retardant, color resin injection nozzle 39 connected to the lower portion of the lower second molding portion (32) By injecting flame-retardant resin or color resin and selectively molding the second hollow molded article according to the characteristics of the product, After the heating and resin injection pipe on / off device is restarted, all resin injection pipes are turned off, and then the upper mold fixing and the guide frame 1 and the upper mold 2 are raised by using a high pressure compressor (not shown), When the upper and lower molds 2 and 3 are detached, the lower first molding part 31 and the upper second molding part 22 have more recesses than the upper first molding part 21 and the lower second molding part 32. In many cases, the manufactured first hollow molded article exists in the lower first molded part 31, and the second hollow molded article remains in the upper second molded part 22. An upper mold (2) installed in the lower portion of the upper mold moving hydraulic pressure (11) and the hydraulic cylinder (12) by operating the upper mold moving hydraulic pressure (11) and the hydraulic cylinder (12) installed in the upper mold fixing and guide frame (1). The upper second forming part 22 of the upper mold lower part 31 of the lower mold 3, The upper mold fixing and the guide frame (1) and the upper mold (2) is lowered toward the lower mold (3) by using a common high pressure (not shown), the upper and lower molds (2, 3) are coalesced, the upper second When the molding part 22 and the lower first molding part 31 coincide with each other, and the first resin injection pipe 36 and the upper mold-type fifth resin injection pipe 26-5 coincide with each other, the lower first molding part After placing the second hollow molded article embedded in the upper second molded part 22 on the upper part of the first hollow molded article embedded in the (31), The heating and resin injection pipe on / off device is operated to turn on the first resin injection pipe 36, the upper mold type fifth resin injection pipe 26-5, and the upper mold type third resin injection pipe 26-3, After turning off the upper mold first resin injection pipe 26-1, the upper mold second resin injection pipe 26-2 and the upper mold fourth resin injection pipe 26-4, the resin is introduced through the resin inlet 5. When injected into the upper mold resin injection pipe (28) via the upper mold resin moving pipe (28) via the upper mold resin injection pipe (26-5) through the nozzle 37 of the first resin injection pipe (36) ( 26-3) is injected with resin, After the resin is injected into the upper second molding part 22 and the lower first molding part 31 connected to the upper mold third resin injection pipe 26-3, the two first and second hollow molded articles are coalesced. After the heating and resin injection pipe on / off device is restarted, all resin injection pipes are turned off, and then the upper mold fixing and the guide frame 1 and the upper mold 2 are raised by using a high pressure compressor (not shown), As the upper and lower molds (2, 3) are detached and the pin (110) installed on the lower portion of the lower mold (3) rises to the upper portion, the coalesced blow molded article is pushed upwards, thereby the first hollow molded article and the second hollow molded article. After the coalesced blow molded article is raised in the state remaining in the upper second molding part 22, the ordinary Robert arm or manually removed, By operating the upper mold moving hydraulic pressure 11 and the hydraulic cylinder 12 installed on the upper mold fixing and the guide frame (1), while moving the upper mold (2) to the original position on the upper part of the lower mold (3) Mill pin (110) of the lower mold (3) is then retracted, and then returning to the first process, the molding method of the hollow molded article, characterized in that to manufacture by repeating the above operation.

Images